Does anyone have ever disassembled the LPG distributor?
 

First af all, hi everybody. I'm new of this forum and I'm a partially satisfied owner of a 2003 V70 native Bi-Fuel.
Due to cooling water consumption, I already done (in Volvo official workshop....) 2 (two) head gasket and 1 (one) complete engine rebuilding, solving exclusively my bank account. At the end, I made by myself changing (with my mechanic) the whole engine, acquired directly in a swedish, kind and very fair car junkyard.
So, thanks to my fabulous experience with official Volvo assistance, I decided to do everything by myself or by my mechanic.

Now the topic.

My car random started to cut off the engine while driving in LPG mode, and above all WITHOUT switching automatically in petrol mode. Nice. It happens from two up to seven time a day.

The only two ways to reset the system are: stop the engine and wait for 10 minutes, watching other cars running; the second way is the "tightrope walker": once found a straight road, the "procedure" says to reach the 70 Km/h, switch off the engine, (pray), wait for 9 seconds, switch on only the ignition key and start engine with car inertia only. Now I'm a little bit tired of being a tightrope; till now I thought to be alone with this problem. "Fortunately" (....) I'm not :D and, thanks also to your witness, the guilty seems to be the LPG distributor.

Just to complete the story, I also noticed a strange behaviour; few minutes before cutting off LPG, the car seems to fly: fast, responsive, ready... seems even better than in petrol mode. But when it happens, I know that the engine will switch off in very few minutes.

So: does anyone opened the distributor and saw what's inside? How it works? It's only a mere equal distributor for all the 5 cylinders together or, in some way, the device gives gas in right phase for each cylinder?
It's possible to (try to) repair it?
Or should I throw the whole car? :D

Thanks in advance

Is there anybody out there? :D

It is basically an idle control valve that is adapted for the use in LPG. Cleaning them will often improve the running.

To me it sounds like another issue again you are having but I would consider giving the distributor a flush through clean to see if it does improve at all.
I would check and clean both of the solenoids

Hello Classicswede and thanks for the answer; in order to have an incremental approach, I emptied the LPG tank and I used a specific cleaner for LPG circuits and something seems going better: the car runs fluid and the idle is perfect. However the cutting-off is still present, a very little bit less frequently (a coincidence?), but it's there...

You have suggested to check and clean boths solenoids: where are those?

Thank you in advance!

One of the solenoids is on the tank, the other is in the engine bay near the vapouriser

Oh thank you; the tank is brand new so, reasonably, I should check the other one only. I'll keep you informed.
Thank you again.

Hello,
I apologize for disturbing but it's time for me to take screwdrivers & Co.!
You said to check the solenoids and one of these is "in the engine bay near the vapouriser"; could you give a look to the attached picture of my engine bay to confirm the "target"?
Many many thanks in advance


http://www.volvoforums.org.uk/pictur...pictureid=9776

Thats the one. If it is swallen or has a split in the plastic it will need replacing

OK, I'll check it, thanks!

Any sign of problems with that one?